... ,the metal,the nylon and the resin. certificate:ISO9001:2008 Excellent credit enterprise Specifications: 1) Available types: 3#, 4#, 5#, 7#, 8 ... . Detials of the zippers: Brand name:yooModel:VariousSize:3#, 4#, 5#, 7#, 8#, 10# or Custom made any size according to ... Co., Ltd. are all Our subsidiary companies. Hope to bulid a long-term friendly relationship with you! competitive price nylon zipper